/* 公共类 */
ul{
    list-style: none;
}
a:hover{
    text-decoration: none;
}
/*去掉蓝色边框，各个浏览器显示效果不同*/
fieldset,img,input,button{
    border: none;
    padding: 0;
    margin: 0;
    outline-style: none;
}
/* 导航栏 */
.topbar{
    position: absolute;
    top: 0;right: 0;bottom: 0;left: 0;
    z-index: 99;
    height: 90px;
}
.topbar.topbar-sticky{
    position: fixed;
    height: 60px;
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.06);
    -webkit-box-shadow: 0 0 15px rgba(0, 0, 0, 0.06);
    transition: margin-left .5s, background-color .5s;
    -webkit-transition: margin-left .5s, background-color .5s;
}
.topbar-backdrop{
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.95);
    z-index: 909;
    cursor: pointer;
    display: none;
}
.topbar-backdrop>i{
    font-size: 20px;
    opacity: .7;
    position: absolute;
    top: 10px;
    right: 20px;
}
.topbar .containers{
    padding-left: 15px;
    padding-right: 15px;
    margin-left: auto;
    margin-right: auto;
    max-width: 100%;
}
.topbar,.containers,.topbar-header,.topbar-collapse,.topbar-nav{
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.topbar-toggle{
    border: 0;
    background: transparent;
    color: #fff;
    font-size: 20px;
    padding: 1px 10px;
    display: none;
}
.topbar-sticky .topbar-toggle{
    color: #616771;
}
.topbar-brand img{
    height: 30px;
    display: none;
}
.topbar .topbar-brand .logo-inverse{
    display: block;
}
.topbar.topbar-sticky .topbar-brand img{
    display: none;
}
.topbar.topbar-sticky .topbar-brand .logo-default{
    display: block;
}
.topbar-nav{
    margin: 0;
}
.topbar-nav li{
    margin: 0 10px;
}
.topbar-nav li a{
    color: #bbb;
    font-size: 12px;
}
.topbar-nav li:hover a{
    color: #fff;
}
.primary{
    margin-left: 10px;
    font-size: 12px;
    padding: 10px 26px;
    line-height: inherit;
    background-color: #0facf3;
    border-color: #0facf3;
    color: #fff;
    border: 0;
    letter-spacing: 1.7px;
    text-transform: uppercase;
    border-radius: 2px;
    outline: none;
    -webkit-transition: 0.15s linear;
    transition: 0.15s linear;
}
.primary:hover{
    -webkit-box-shadow: 0 3px 10px rgba(15, 172, 243, 0.6);
    box-shadow: 0 3px 10px rgba(15, 172, 243, 0.6);
}
@media (max-width: 575px){
    .topbar > .containers{
        width: 100%;
    }
}
@media (min-width: 576px){
    .containers{
        width: 540px;
    }
}
@media (min-width: 768px){
    .containers{
        width: 720px;
    }
}
@media (min-width: 992px){
    .containers{
        width: 960px;
    }
}
@media (min-width: 1200px){
    .containers{
        width: 1140px;
    }
}
@media (max-width: 992px){
    .topbar-toggle{
        display: block;
    }
    .topbar-collapse .topbar-nav{
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        flex-direction: column;
        flex-wrap: nowrap;
        position: fixed;
        overflow: auto;
        left: -300px;
        top: 0;
        bottom: 0;
        width: 300px;
        background-color: #fff;
        margin: 0;
        padding: 30px;
        -webkit-transition: .3s;
        transition: .3s;
        z-index: 999;
    }
    .topbar-collapse .topbar-nav li{
        position: absolute;
        left: 20px;
    }
    .topbar-collapse .topbar-nav li:nth-child(2){
        top: 70px;
    }
    .topbar-nav li a,.topbar-nav li:hover a{
        color: #616771;
    }
}
/* 头部 */
.header{
    height: 100vh;
    position: relative;
    border-bottom: none;
    padding: 160px 0 100px;
    padding-bottom: 0;
    z-index: 0;
    background: url(../img/big.jpg) center no-repeat;
    background-size: cover;
    -webkit-background-size: cover;
    overflow: hidden;
}
.header::after{
    position: absolute;
    content: '';
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #191919;
    opacity: .8;
}
.container-wide{
    height: 100%;
    position: relative;
    z-index: 99;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}
.top,.btm{
    width: 100%;
}
.top h1{
    text-align: center;
    font: 600 45px 'Roboto', sans-serif;
    letter-spacing: 2px;
    color: #fff;
}
.search{
    width: 35%;
    margin: 0 auto;
    margin-top: 60px;
}
.search .input-group{
    width: 100%;
    background: #fff;
    border-radius: 3px;
    padding: 3px;
    display: flex;
    justify-content: flex-start;
    align-items: center;
}
.search input{
    width: 100%;
    height: 100%;
    padding: 10px 15px;
    border-color: transparent;
    font-size: 16px;
}
.search span{
    width: 30px;
    height: 100%;
    background-color: #fff;
    color: #b7bbbd;
    text-align: center;
    line-height: 44px;
}
.search-buttons{
    margin-top: 30px;
}
.search-buttons .btn{
    margin: 0 10px;
}
.btm{
    padding-bottom: 30px;
    align-self: flex-end;
}
.btm a{
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 1px solid #ccc;
    border-top: 0;
    border-left: 0;
    transform: rotateZ(45deg) translate(0,0);
    animation: scrollDown 2s infinite;
}
@keyframes scrollDown{
    0%{
        -webkit-transform: rotateZ(45deg) translate(0,0);
        transform: rotateZ(45deg) translate(0,0);
        opacity: 0
    }
    50%{
        opacity: 1
    }
    100%{
        -webkit-transform: rotateZ(45deg) translate(20px,20px);
        transform: rotateZ(45deg) translate(20px,20px);
        opacity: 0
    }
}
@media (max-width: 992px){
    .search{
        width: 55%;
    }
}
@media (max-width: 650px){
    .search{
        width: 75%;
    }
}
@media (max-width: 500px){
    .search{
        width: 85%;
    }
}
/* 主体部分 */
.section{
    padding-top: 90px;
    padding-bottom: 90px;
    background-color: #fff;
    overflow-x: hidden;
}
@media (max-width: 991px){
    .section{
        padding-top: 70px;
        padding-bottom: 70px;
    }
}
.b-b{
    border-bottom: 1px solid #ebebeb;
}
.p0{
    padding: 0;
    padding-bottom: 50px;
}
.container-wide{
    align-items: flex-start;
}
.section-con{
    height: 400px;
    padding: 40px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}
.section-con h1{
    font-size: 50px;
    font-weight: 900;
}
.section-con p{
    width: 320px;
    font-size: 20px;
}
.section-con h1,.section-con p,.section-con .btn{
    display: inline-block;
}
.section-con .w100{
    width: 100%;
    text-align: center;
}
.section-con .btn{
    padding: 15px 50px;
    font-size: 16px;
    background-color: #fff;
}
.section-left{
    background-color: #0facf3
}
.section-right{
    background-color: #e4e7ea;
}
.section-left h1,.section-left p{
    color: #fff;
}
.section-header{
    text-align: center;
    max-width: 70%;
    margin: 0 auto;
}
.align-items-center{
    align-items: center;
    -webkit-align-items: center; 
}
.mb90{
    margin-bottom: 90px;
}
.hidden-sm-down,.offset-md-1{
    padding: 15px;
}
.hidden-sm-down img{
    width: 100%;
}
@media (min-width: 768px){
    .text-md-left{
        text-align: left !important;
    }
    .offset-md-1{
        margin-left: 8.333333%;
    }
    .mb90 .col-sm-6{
        width: 41.66666666%;
    }
}
.fw-900{
    font-weight: 900 !important;
}
.fs-60{
    font-size: 60px !important;
    line-height: 1.2;
}
.opacity-20{
    opacity: .2;
}
.fw-300{
    font-weight: 300 !important;
}
@media (max-width: 767px){
    .hidden-sm-down {
        display: none !important;
    }
}
@media (min-width: 576px){
    .container{
        padding-right: 15px;
        padding-left: 15px;
        width: 540px;
        max-width: 100%;
    }
}
@media (min-width: 768px){
    .container{
        padding-right: 15px;
        padding-left: 15px;
        width: 720px;
        max-width: 100%;
    }
}
@media (min-width: 992px){
    .container {
        padding-right: 15px;
        padding-left: 15px;
        width: 960px;
        max-width: 100%;
    }
}

.bg-grey, .bg-gray{
    background-color: #f8f8f8;
}
.swiper-container{
    width: 100%;
    height: 100%;
}
.swiper-slide{
    text-align: center;
    font-size: 18px;
    background: #fff;
    display: -webkit-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    -webkit-align-items: center;
    align-items: center;
}
.blockquote{
    border-left: 0;
}
.blockquote .lead{
    font-size: 16px;
    line-height: 30px;
    font-weight: 200;
}
.blockquote p::before {
    content: "“";
    margin-left: -13px;
    padding-right: 4px;
    opacity: .5;
}
.blockquote p::after {
    content: "”";
    margin-right: -13px;
    padding-left: 4px;
    opacity: .5;
}
.avatar{
    border-radius: 10rem;
    width: 64px;
    height: 64px;
}
.swiper-slide footer{
    margin-top: 30px;
    margin-bottom: 30px;
}

.section-header hr{
    width: 50px;
}
.partner{
    display: -webkit-box;
    display: flex;
    -webkit-box-align: center;
    align-items: center;
    -webkit-box-pack: center;
    justify-content: center;
    text-align: center;
    flex-wrap: wrap;
}
.partner img{
    margin: 16px 24px;
    max-width: 100%;
}
.greyscale{
    filter: grayscale(100%);
}
.greyscale:hover{
    filter: grayscale(0%);
}

/* 底部 */
.site-footer{
    font-size: 0.75rem;
    border-top: 1px solid #f1f2f3;
    padding: 30px 0;
}
.site-footer .row>div{
    padding: 15px;
}
.heading-alt{
    font-family: "Open Sans", sans-serif;
    font-weight: 600;
    letter-spacing: 0;
}
.fs-13{
    font-size: 13px !important;
}
.fs-14{
    font-size: 14px !important;
}
.mb-3{
    margin-bottom: 3px !important;
}
.mb-16{
    margin-bottom: 16px !important;
}
h6 img{
    max-width: 55%;
}
.text-light{
    color: #788394 !important;
}
.list{
    margin: 0;
    padding: 0;
}
.list li a{
    font-size: 13px;
    color: #616771;
}
.list li:hover a{
    color: #0facf3;
}

.input-group{
    border: 1px solid #ebebeb;
}
.input-group-addon{
    width: auto;
    padding: 12px 13px;
    color: #b7bbbd;
    background-color: transparent;
    border: 0;
}
.form-control{
    padding: 18px 0px;
    border: 0;
    box-shadow: none;
    -webkit-box-shadow: none;
}

.social a{
    display: inline-block;
    margin-right: 20px;
    text-align: center;
    color: inherit;
    font-size: 16px;
    border-radius: 3px;
    opacity: 0.6;
    -webkit-transition: .4s;
    transition: .4s;
}